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Table 1 Luminous efficacies of white LEDs using PiGs containing various concentrations of diffuser layers

From: Phosphor-in-glasses composites containing light diffusers for high color uniformity of white-light-emitting diodes

ZrO2 concentration (wt. %)

0

5

10

15

20

Luminous efficacy (lm/W)

90.3

86.0

83.4

82.7

78.6